一年级下册口算题大全：两位数减整十数、一位数！ 33-2= 78-10= 86-1= 98-60= 77-2= 47-20= 73-1= 74-30= 78-4= 83-20= 86-2= 75-20= 69-4= 82-10= 47-2= 98-60= 33-1= 48-20= 96-2= 67-20=
